EP3239329A4 - Structural ultra-thick steel having excellent resistance to brittle crack propagation, and production method therefor - Google Patents

Structural ultra-thick steel having excellent resistance to brittle crack propagation, and production method therefor Download PDF

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Publication number
EP3239329A4
EP3239329A4 EP15873530.8A EP15873530A EP3239329A4 EP 3239329 A4 EP3239329 A4 EP 3239329A4 EP 15873530 A EP15873530 A EP 15873530A EP 3239329 A4 EP3239329 A4 EP 3239329A4
Authority
EP
European Patent Office
Prior art keywords
production method
method therefor
thick steel
crack propagation
excellent resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15873530.8A
Other languages
German (de)
French (fr)
Other versions
EP3239329A1 (en
EP3239329B1 (en
EP3239329B8 (en
Inventor
Hak-Cheol Lee
Sung-Ho Jang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP3239329A1 publication Critical patent/EP3239329A1/en
Publication of EP3239329A4 publication Critical patent/EP3239329A4/en
Publication of EP3239329B1 publication Critical patent/EP3239329B1/en
Application granted granted Critical
Publication of EP3239329B8 publication Critical patent/EP3239329B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/009—Pearlite
EP15873530.8A 2014-12-24 2015-12-11 Structural ultra-thick steel having excellent resistance to brittle crack propagation, and production method therefor Active EP3239329B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020140188465A KR101657827B1 (en) 2014-12-24 2014-12-24 Steel having excellent in resistibility of brittle crack arrestbility and manufacturing method thereof
PCT/KR2015/013557 WO2016105003A1 (en) 2014-12-24 2015-12-11 Structural ultra-thick steel having excellent resistance to brittle crack propagation, and production method therefor

Publications (4)

Publication Number Publication Date
EP3239329A1 EP3239329A1 (en) 2017-11-01
EP3239329A4 true EP3239329A4 (en) 2017-11-01
EP3239329B1 EP3239329B1 (en) 2019-10-09
EP3239329B8 EP3239329B8 (en) 2019-11-20

Family

ID=56150967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15873530.8A Active EP3239329B8 (en) 2014-12-24 2015-12-11 Structural ultra-thick steel having excellent resistance to brittle crack propagation, and production method therefor

Country Status (6)

Country Link
US (1) US20170342518A1 (en)
EP (1) EP3239329B8 (en)
JP (1) JP6475839B2 (en)
KR (1) KR101657827B1 (en)
CN (1) CN107109591A (en)
WO (1) WO2016105003A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101940880B1 (en) * 2016-12-22 2019-01-21 주식회사 포스코 Sour resistance steel sheet having excellent low temperature toughness and post weld heat treatment property, and method of manufacturing the same
KR102209547B1 (en) * 2018-12-19 2021-01-28 주식회사 포스코 Ultra thick structural steel having superior brittle crack initiation resistance and method of manufacturing the same
CN115354219B (en) * 2022-07-06 2023-09-15 江阴兴澄特种钢铁有限公司 SA516Gr70 steel plate with excellent high-temperature strength at 200-400 ℃ and manufacturing method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999032671A1 (en) * 1997-12-19 1999-07-01 Exxonmobil Upstream Research Company Ultra-high strength dual phase steels with excellent cryogenic temperature toughness
WO2000040764A2 (en) * 1998-12-19 2000-07-13 Exxonmobil Upstream Research Company Ultra-high strength ausaged steels with excellent cryogenic temperature toughness
EP1025272B1 (en) * 1997-07-28 2006-06-14 Exxon Mobil Upstream Research Company Ultra-high strength, weldable steels with excellent ultra-low temperature toughness
JP2010001520A (en) * 2008-06-19 2010-01-07 Kobe Steel Ltd Thick steel plate excellent in brittle-crack propagation stop property, and producing method thereof
WO2014132627A1 (en) * 2013-02-28 2014-09-04 Ｊｆｅスチール株式会社 Thick steel plate and production method for thick steel plate

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Publication number Priority date Publication date Assignee Title
JPH064903B2 (en) * 1985-04-09 1994-01-19 新日本製鐵株式会社 Steel plate with excellent brittle crack propagation arresting property and its manufacturing method
JPH04180521A (en) * 1990-11-14 1992-06-26 Kobe Steel Ltd Production of high tensile thick steel plate having high yield strength and high toughness
JP3474661B2 (en) * 1995-01-24 2003-12-08 新日本製鐵株式会社 Sour-resistant steel plate with excellent crack arrestability
JP3417878B2 (en) * 1999-07-02 2003-06-16 株式会社神戸製鋼所 High-strength hot-rolled steel sheet excellent in stretch flangeability and fatigue properties and its manufacturing method
KR100380750B1 (en) 2000-10-24 2003-05-09 주식회사 포스코 Method for high strength steel plate having superior toughness in weld heat-affected zone
US20060169368A1 (en) * 2004-10-05 2006-08-03 Tenaris Conncections A.G. (A Liechtenstein Corporation) Low carbon alloy steel tube having ultra high strength and excellent toughness at low temperature and method of manufacturing the same
JP4058097B2 (en) * 2006-04-13 2008-03-05 新日本製鐵株式会社 High strength steel plate with excellent arrestability
JP5064150B2 (en) * 2006-12-14 2012-10-31 新日本製鐵株式会社 High strength steel plate with excellent brittle crack propagation stopping performance
KR100851176B1 (en) * 2006-12-27 2008-08-08 주식회사 포스코 Hot-rolled steel sheet for line pipe having low anisotropy of low temperature toughness and yield strength and the method for manufacturing the same
JP4309946B2 (en) * 2007-03-05 2009-08-05 新日本製鐵株式会社 Thick high-strength steel sheet excellent in brittle crack propagation stopping characteristics and method for producing the same
KR100957961B1 (en) 2007-12-26 2010-05-17 주식회사 포스코 High strength steel plate having excellent welded zone toughness for linepipe and the method for manufacturing the same
KR101360737B1 (en) * 2009-12-28 2014-02-07 주식회사 포스코 High strength steel plate having excellent resistance to brittle crack initiation and method for manufacturing the same
JP5425702B2 (en) * 2010-02-05 2014-02-26 株式会社神戸製鋼所 High-strength thick steel plate with excellent drop weight characteristics
JP5598485B2 (en) * 2011-02-08 2014-10-01 Ｊｆｅスチール株式会社 Thick steel plate having a thickness of 50 mm or more excellent in long and brittle crack propagation stopping characteristics and method for producing the same
KR101681491B1 (en) * 2011-12-27 2016-12-01 제이에프이 스틸 가부시키가이샤 High strength steel plate having excellent brittle crack arrestability
JP5304925B2 (en) * 2011-12-27 2013-10-02 Ｊｆｅスチール株式会社 Structural high-strength thick steel plate with excellent brittle crack propagation stopping characteristics and method for producing the same
TWI463018B (en) * 2012-04-06 2014-12-01 Nippon Steel & Sumitomo Metal Corp High strength steel plate with excellent crack arrest property
JP2013221189A (en) * 2012-04-17 2013-10-28 Nippon Steel & Sumitomo Metal Corp High-strength thick steel plate excellent in brittle crack propagation arresting capability
JP2013221190A (en) * 2012-04-17 2013-10-28 Nippon Steel & Sumitomo Metal Corp High-strength thick steel plate excellent in brittle crack propagation arresting capability
JP5811032B2 (en) * 2012-05-23 2015-11-11 新日鐵住金株式会社 Steel sheet for LPG tank
JP6086086B2 (en) * 2014-03-19 2017-03-01 Ｊｆｅスチール株式会社 Ultra-thick steel plate with excellent HIC resistance and manufacturing method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1025272B1 (en) * 1997-07-28 2006-06-14 Exxon Mobil Upstream Research Company Ultra-high strength, weldable steels with excellent ultra-low temperature toughness
WO1999032671A1 (en) * 1997-12-19 1999-07-01 Exxonmobil Upstream Research Company Ultra-high strength dual phase steels with excellent cryogenic temperature toughness
WO2000040764A2 (en) * 1998-12-19 2000-07-13 Exxonmobil Upstream Research Company Ultra-high strength ausaged steels with excellent cryogenic temperature toughness
JP2010001520A (en) * 2008-06-19 2010-01-07 Kobe Steel Ltd Thick steel plate excellent in brittle-crack propagation stop property, and producing method thereof
WO2014132627A1 (en) * 2013-02-28 2014-09-04 Ｊｆｅスチール株式会社 Thick steel plate and production method for thick steel plate
EP2963138A1 (en) * 2013-02-28 2016-01-06 JFE Steel Corporation Thick steel plate and production method for thick steel plate

Also Published As

Publication number Publication date
EP3239329A1 (en) 2017-11-01
EP3239329B1 (en) 2019-10-09
US20170342518A1 (en) 2017-11-30
EP3239329B8 (en) 2019-11-20
JP2018504524A (en) 2018-02-15
WO2016105003A1 (en) 2016-06-30
KR20160078668A (en) 2016-07-05
KR101657827B1 (en) 2016-09-20
CN107109591A (en) 2017-08-29
JP6475839B2 (en) 2019-02-27

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